This is a new school for specialist learning located on the site of a historic redundant specialist learning school. As the school is located on a sloping site, a split level ‘L’ shaped design has been produced to minimise site earthworks and also enable the many stats, which cross the site, to remain insitu without diversion. Conventional reinforced concrete retaining walls have been designed to the perimeter of the building with timber crib retaining walls used externally. The foundations are generally mass concrete pads taken down to the existing rock strata. The foundations and drainage design required careful consideration and coordination in order to accommodate the existing stats. Due to the strict allowable discharge limit set by Leeds CC and Yorkshire Water, the drainage design includes a split level attenuation tank which also weaves its way in and around the existing stats and proposed structure. The superstructure is generally 2 to 3 storeys of Structural Insulated Panels (SIPs) constructed from a suspended slab – these SIPs panels are structurally enhanced by steelwork at various locations.